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Earth-CARE/EECLAT 2018 Joint Workshop

The 1st Earth-CARE/EECLAT Joint Workshop (aka the 6th EECLAT workshop) took fflace between January 29th and 31st in Colmar, France. Below you will find the final programme (PDF). The scientific presentations can be found here.


Thanks to all participants ! Thanks to Anna Luebke for working on logistics with us. Also thanks to the Grand Hotel Bristol which provided the infrastructure and coffee.

Monday January 29th

  • 14:00 – 14:10 Welcome + Introduction to EECLAT
  • 14:10 – 14:30 Q. Libois (CNRM): On the potential of far-infrared radiometry for ice cloud remote sensing
  • 14:30 – 14:50 A. Chauvigné (LOA): LIDAR ratio comparison from in-situ and remote sensing measurement technique
  • 14:50 – 15:10 G. Papavasileiou (KIT): Observed cloud anomalies associated with the North Atlantic Oscillation, and their potential radiative feedback on internal circulation variability
  • 15:10 – 15:30 R. Guzman (LMD): Use of space lidar measurements to study the TOA LW Cloud Radiative Effect
  • 15:30 – 15:50 H. Chepfer (LMD): Beyond Earth-CARE: The MESCAL mission
  • 16:25 – 16:30 A. Dabas (CNRM-GAME): An update on the ADM-Aeolus mission
  • 16:30 – 16:50 C. Listowski (LATMOS): Antarctic clouds seen through the synergistic DARDAR satellite products: distribution, thermodynamic phase, and links with atmospheric dynamics
  • 16:50 – 17:10 F. Hemmer (LOA): Retrieval of Cirrus Cloud IWC Profile from Ground-Based Remote Sensing using the Synergy of Lidar and Multi-Spectral Infrared Radiometry
  • 17:10 – 17:30 M. Stone (NOAA/LMD): Impact of Atmospheric Circulation on Observations of Temperature, Clouds, and Radiation at Summit Station, Greenland with Self-Organizing Maps
  • 17:30 – 17:50 A. Berne (EPFL): Interactions between catabatic winds and solid precipitation in Antarctica – impact on CloudSat precipitation retrievals
  • 18:00 – 18:20 F. Tornow (FUB): Sensitivity of Heating Rates in Stratocumulus Clouds
  • 18:20 – 18:40 G. Cesana (GISS): Constraining the models’ response of tropical low clouds to SST forcings using CALIPSO observations
  • 18:40 – 19:00 Q. Coopman (KIT): Analysis of thermodynamic phase transition by cloud tracking

Tuesday, 30 January 2018

  • 8:30 – 8:55 D. Donovan (KNMI): EarthCARE (Short Overview) and the L2 Algorithm Development process
  • 8:55 – 9:15 F. Szczap (LaMP): Using the McRALI Monte Carlo lidar simulator to evaluate EarthCARE data
  • 9:15 – 9:35 A. Feofilov (LMD): Statistically based calibration/validation control of ATLID L1 data
  • 9:35 – 9:55 P. Goloub (LOA): Remote sensing of aerosols from ACTRIS-FR ground-based sites for EarthCARE validation
  • 9:55 – 10:15 J. Vidot (CMS): Validation of RTTOV IR aerosol and cloud parameterization using the A-Train
  • 10:15 – 10:45 Coffee Break
  • 10:45 – 11:10 A. Illingworth (U. Reading): EarthCARE Synergy
  • 11:10 – 11:30 P. Kollias (U. Cologne): The EarthCARE Cloud Profiling Radar: Capabilities and challenges
  • 11:30 – 11:50 P. Kollias (U. Cologne): The EarthCARE Cloud Profiling Radar: L2 data products
  • 11:50 – 12:10 L. Pfitzenmaier (U. Cologne): A miniature 94 GHz radar network in Europe for EarthCARE CPR reference measurements
  • 12:10 – 12:30 O. Sourdeval (LOA/Univ. Leipzig): Calibration of new cloud retrievals for EarthCare using high-resolution simulations
  • 14:00 – 16:00 Splinter Groups: EarthCARE Project Office Steering Committee EECLAT
  • 16:30 – 16:50 D. Bouniol (CNRM): A-Train/TRMM coupling to document convection
  • 16:50 – 17:10 M. Klingebiel (MPI-M): The Barbados Cloud Observatory – Measurements at the edge of the ITCZ
  • 17:10 – 17:30 V. Duflot (LACy): Profiling of aerosols and clouds in Réunion Island
  • 17:30 – 17:50 S. Groß (DLR): EarthCARE-like payload on HALO for preparation and future validation studies
  • 18:00 – 18:20 A. Hünerbein (TROPOS): EarthCARE mission – an overview with regards to sensor-synergy between imager and atmospheric lidar
  • 18:20 – 18:40 L. Bugliaro (DLR): Synergistic ice cloud retrieval with lidar and imager observations
  • 18:40 – 19:00 R. Giering (FastOpt): Uncertainty estimation and propagation for satellite retrieval

Wednesday, 31 January 2018

  • 8:30 – 8:50 S. Kinne (MPI-M): MacV2 – An Aerocom Product
  • 8:50 – 9:10 Q. Cazenave (LATMOS): Changes in the microphysical parameterizations of a radar-lidar inversion algorithm and consequences on the retrieved IWC – Statistical and case studies
  • 9:10 – 9:30 G. Ancellet (LATMOS): Ground-based and airborne lidar aerosol observations in Siberia
  • 9:30 – 9:50 F. Ewald (DLR): Looking for closure: Testing the Synergistic Varcloud Retrieval of Ice Cloud Properties at Different Wavelengths
  • 9:50 – 10:10 H. Deneke (TROPOS): Assessing Radiative Closure of EarthCARE Cloud and Aerosol Products with Surface Observations
  • 10:50 – 12:20 EarthCARE Scientific Discussion (chair: B. Stevens)
  • 12:20 – 12:30 Conclusion of Joint Workshop


  • T. Tremas (CNES/AERIS): AERIS, Données et services pour l’Atmosphère

List of participants

1 Alkasem, Alaa LaMP
2 Ancellet, Gerard LATMOS
3 Baray, Jean-Luc LaMP
4 Begue, Nelson LACY
5 Berne, Alexis EPFL
6 Bony, Sandrine LMD
7 Bouniol, Dominique CNRM
8 Bugliaro, Luca DLR
9 Cazenave, Quitterie LATMOS
10 Cesana, Gregory GISS
11 Chauvigné, Aurélien LOA
12 Chazette, Patrick LSCE
13 Chepfer, Hélène LMD
14 Chiriaco, Marjolaine LATMOS
15 Coopman, Quentin KIT
16 Dabas, Alain CNRM
17 Delanoe, Julien LATMOS
18 Deneke, Hartwig TROPOS
19 Donovan, Dave KNMI
20 Duflot, Valentin LACy
21 Edel, Léo LMD
22 El Amraoui, Laaziz CNRM
23 Evesque, Corinne IPSL
24 Ewald, Florian DLR
25 Feofilov, Artem LMD
26 Giering, Ralf FastOpt
27 Goloub, Philippe LOA
28 Groß, Silke DLR
29 Guzman, Rodrigo LMD
30 Hemmer, Friederike LOA
31 Höjgård-Olsen, Erik LATMOS
32 Horváth, Ákos Univ. Hamburg
33 Hünerbein, Anja TROPOS
34 Illingworth, Anthony Univ. Reading
35 Irbah, Abdanour LATMOS
36 Jégou, Fabrice LPC2E
37 Kinne, Stefan MPI-M
38 Klingebiel, Marcus MPI-M
39 Kollias, Pavlos Univ. Köln
40 Labonnote, Laurent LOA
41 Lange, Anne Caroline FZJ
42 Libois, Quentin CNRM
43 Listowski, Constantino LATMOS
44 Luebke, Anna MPI-M
45 Mioche, Guillaume LaMP
46 Montoux, Nadège LaMP
47 Nam, Christine LIM
48 Noel, Vincent LA
49 Papavasileiou, Georgios KIT
50 Payen Guillaume LACY
51 Pfitzenmaier, Lukas Univ. Köln
52 Pommereau, Jean-Pierre LATMOS
53 Raberanto, Patrick LMD
54 Serikov, Ilya MPI-M
55 Shcherbakov, Valery LaMP
56 Sourdeval, Odran LOA
57 Stevens, Bjorn MPI-M
58 Stone, Michael NOAA
59 Szczap, Frédéric LaMP
60 Tornow, Florian Univ. Berlin
61 Torres, Benjamin LOA
62 Totems, Julien LSCE
63 Trémas Thierry CNES/AERIS
64 Vérèmes, Hélène LACY
65 Vidot, Jérôme CMS
66 von Bargen, Albrecht DLR
67 Wirth, Martin DLR
68 Zabukovec, Antonin LATMOS

Atelier EECLAT 2017 – Le bilan

The 5th EECLAT workshop took place between January 23rd and 25th in the beautiful but foggy Saint-Valery-Sur-Somme, France. Below you will find the final programme (PDF), with links to the scientific presentations.

Thanks to all participants ! Also thanks to the Hotel du Cap Hornu who provided the infrastructure and coffee.

Monday January 23

14h General overview – J. Delanoe (LATMOS) /V. Noel (LA)

14h30 Scientific talks

16h Break

17h30 Break

Tuesday January 24

8h30 Scientific talks

10h30 Break

12h30 Lunch

Wednesday January 25th

9h-12h : EECLAT 2017 and discussion

Fin de l’Atelier

Merci à Constantino pour la photo ! grande taille


Atelier EECLAT 2016 – le bilan

The EECLAT 2016 workshop took place between January 27th and 29th, 2016 in Carcassonne, France. Here is the program. Below is the list of scientific presentations with links to slides.

Thanks to all participants! Also thanks to the Hotel Mercure Carcassonne staff who provided the infrastructure and coffee. Thanks to IPSL admins (including F. Beaud) for their help organizing the trip.

Debriefing of EECLAT 2016 proposal : recommandations and budget

Atelier EECLAT 2015 – le bilan

The EECLAT 2015 workshop took place between January 19th and 21st, 2015 in Ploumanac’h, France. Below is the final programme, with links to the scientific presentations.

Thanks to all participants! Also thanks to the Castel Beau Site hotel staff who provided the infrastructure and coffee. Thanks to IPSL admins (including F. Beaud) for all their help organizing the trip.

Pre-workshop Information


2015-01-21 16.52.29


Lundi 19 Janvier

14h Accueil

14h30 Message d’introduction du Centre de Météorologie Spatiale (CMS)

14h50 Rappels des thèmes scientifiques d’EECLAT et updates WP : T1.1T2.8+T2.9T4.2T4.3T5.2

15h50 Infos générales EECLAT (J. Delanoe) + CALIPSO status et V4 (J. Pelon)

16h30 Break

17h00 Projets en lien avec EECLAT


Mardi 20 Janvier

9h00 Exposés scientifiques

10h30 Break

11h00 Suite des exposés

12h30 Déjeuner

14h45 Suite des exposés

17h00 Break

17h30 Suite des exposés

18h50 Bilan EECLAT 2014-2015 – V. Noel


Mercredi 21 Janvier

9h00 EECLAT 2015-2016 (Notes de Réunion)

10h30 Break

14h00 Visite du CMS

16h00 fin de l’atelier

2015-01-21 14.15.21

EECLAT 2014 workshop – post-mortem

The EECLAT 2014 workshop took place between January 20th and 22nd, 2014 in La Rochelle, France. Below is the final programme, with links to the scientific presentations.

Thanks to all participants! Also thanks to the La Rochelle Mercure hotel staff who provided the infrastructure and coffee. Thanks to LMD admins (S. Sportouch, I. Ricordel, S. Agasse, S. Lekieffre, MD. Coudert, and M. Maherou) for all their help organizing the trip.

2014-01-22 La Rochelle

Peu de touristes à la Rochelle

During the workshop the group decided to reconvene next year around the same dates, probably in Lannion.


Lundi 20 janvier

14h Accueil

14h30 Infos générales EECLAT, J. Delanoe

15h30 Validation CALIPSO et produits nominaux (T0)

16h30 Nuages à l’échelle locale et régionale (T1)

Mardi 21 janvier

9h Nuages à l’échelle locale et régionale, suite (T1)

11h Nuages à l’échelle globale (T2)


14h Outils de transfert radiatif et produits futurs (T5)

16h30 Données pour préparer EarthCare (T6)

17h30 Bilan EECLAT 2013 et propal 2014


Mercredi 22 janvier

9h EECLAT 2015 (discussion ouverte, notes G. Sèze)

2014-01-22 Machine a café


Publications acceptées, June 2013

Hoareau, C., Keckhut, P., Noel, V., Chepfer, H., and Baray, J.-L. 2013: A decadal cirrus clouds climatology from ground-based and spaceborne lidars above south of France (43.9° N–5.7° E), Accepted to Atmos. Chem. Phys. (ACPD reference: vol. 13, 6379-6417, doi:10.5194/acpd-13-6379-2013)

This study provides an analysis of cirrus clouds properties at midlatitude in the southern part of France from ground-based and spaceborne lidars. A climatology of cirrus clouds properties and their evolution over more than 12 yr is presented and compared to other mid-latitude climatological studies. Cirrus clouds occur ~ 37% of the total observation time and remain quasi-constant across seasons with a variation within ~ 5% around the mean occurrence. Similar results are obtained from CALIOP and the ground-based lidar, with a mean difference in occurrence of ~ 5% between both instruments. From the ground-based lidar data, a slight decrease in occurrence of ~ 3% per decade is observed but found statistically insignificant. Based on a clustering analysis of cirrus cloud parameters, three distinct classes have been identified and investigations concerning their origin are discussed. Properties of these different classes are analysed, showing that thin cirrus in the upper troposphere represent ~ 50% of cloud cover detected in summer and fall, decreasing by 15–20% for other seasons.

Ceccaldi M., J. Delanoë, R. J. Hogan , N. Pounder , A. Protat , J. Pelon, 2013: From CloudSat-CALIPSO to Earth-Care : Evolution of the DARDAR cloud classication and its validation using airborne radar-lidar observations. J. Geophys. Res. 10.1002/jgrd.50579

This paper presents the implementation of a new version of the DARDAR (raDAR liDAR) classification derived from CloudSat and CALIPSO data. The resulting target classification called DARDAR v2 is compared to the first version called DARDAR v1. Overall DARDAR v1 reports more cloud or rain pixels than DARDAR v2. In the low troposphere this is because v1 detects too many liquid cloud pixels, and in the higher troposphere this is because v2 is more restrictive in lidar detection than v1. Nevertheless, the spatial distribution of different types of hydrometeors show similar patterns in both classifications. The French airborne RAdar -LIdar (RALI) platform carries a CloudSat/CALIPSO instrument configuration (Lidar at a wavelength of 532 nm and a 95GHz cloud radar), as well as an EarthCare instrument configuration (High Spectral Resolution Lidar at 355 nm and a 95 GHz Doppler cloud radar). It therefore represents an ideal go-between for A-Train and EarthCare. The DARDAR v2 classification algorithm is adapted to RALI data for A-Train overpasses during dedicated airborne field experiments using the lidar at 532 nm and the radar Doppler measurements. The results from the RALI classification are compared with the DARDAR v2 classification to identify where the classification should still be interpreted with caution. Finally the RALI classification algorithm with lidar at 532 nm is adapted to RALI with High Spectral Resolution lidar data at 355 nm in preparation for EarthCare.

Proposition ISS-LIS sélectionnée

E. Defer a annoncé que…

la proposition ISS-LIS a été sélectionnée. Il s’agit de l’installation sur la station spatiale du capteur d’éclairs LIS (Lightning Imaging Sensor) identique (“spare version”) à celui qui est opéré depuis 1997 sur la mission TRMM. Lancement prévu en 2016.

La synergie entre ISS-CATS et ISS-LIS pourra être explorée (si les stratégies d’observation sont compatibles) à partir des résultats obtenus au sein d’EECLAT via le T2.4. Affaire à suivre donc!